L.A. schools won’t release teachers’ evaluation scores - The Answer Sheet - The Washington Post

http://www.washingtonpost.com/blogs/answer-sheet/post/la-schools-wont-release...

Valerie Strauss argues that value added scores shouldn't be made public because the scores are so unreliable. If scores ever do go public, I hope it's several years worth so the public can get a sense for how unreliable they're likely to be.